Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Chemicals and Toxics
    • Climate Change
    • Emergency Response
    • Environmental Information by Location
    • Environmental Justice
    • Greener Living
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Pesticides
    • Radon
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Guidance
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • EPA Administrator
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History
    • Staff Directory
Contact Us

Emission Standards Reference Guide for On-road and Nonroad Vehicles and Engines

  • Controlling Emissions from Mobile Sources

    Learn about the emissions standards guide

This guide contains tables listing federal emission standards for on-road and nonroad vehicles and engines, and related fuel sulfur standards. Each table includes the standards, useful life, warranty period, and the availability of averaging, banking, and trading (ABT). This guide is for reference purposes only; it does not include detailed information about all variations and restrictions associated with the standards. Refer to each table to find the applicable Code of Federal Regulations (CFR) citations which provide complete information on the standards.

Learn About the Guide

  • Basic Information
 

Emission Standards

  • All Federal Emission Standards
    • Light-Duty Vehicles and Trucks and Motorcycles Emission Standards
    • Heavy-Duty Highway Engines and Vehicles Emission Standards
    • Nonroad Engines and Vehicles Emission Standards
    • Fuel Sulfur Standards

Additional Resources

  • Vehicle Weight Classifications
  • EPA Emission Standards Regulations
  • Non-EPA Emission Standards Resources and Guides
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on August 5, 2022
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data.gov
  • Inspector General
  • Jobs
  • Newsroom
  • Open Government
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions

Follow.